Superimposed positive sequence voltage and current based islanding detection techniques for microgrid

This paper presents an islanding detection technique using superimposed positive sequence voltage and current for microgrid system. The conventional passive methods have the drawback of non-detection zone (NDZ), and active islanding detection methods introduce disturbance which might cause problems with reliability, stability, and power quality on a power system. Two systems are simulated using RSCAD/RTDS software and several test cases are generated to test the performance of the proposed technique.